Best caves around Fay-En-Montagne are found within the broader Jura Mountains region, known for its diverse underground formations. While Fay-En-Montagne itself is a rural commune recognized for dairy farming, the surrounding area offers several notable cave systems. These sites showcase the complex geology of the Jura, featuring stalactites, stalagmites, and underground rivers. The region provides opportunities for exploring natural monuments and historical sites within its cave networks.
Last updated: November 5, 2026
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A small but great cave - flashlight recommended.
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After years of bans or restricted access, the Jura Departmental Speleology Committee reached an agreement with the municipality of Nevy-sur-Seille, and is now tenant of the cavity. The rental lease requires that the entrance be closed by an armored door, and its access reserved for clubs and individual members of the French Speleology Federation, or a foreign federation. Before any visit, to obtain the access code, you must submit a request to the C.D.S du Jura. (http://juraspeleo.ffspeleo.fr/grottes/topoguide/fiches/cassots.htm)
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This small cavity has the ceiling pierced at the beginning and at the end of the gallery. It would have sheltered a hermit.
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The Hole of the Moon is a cave dug in the limestone rock of the cliffs overlooking Poligny and its vineyards.
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A good 16 km of underground passages and galleries. A beautiful stream, very rich in stalactite jewelry, but also very dangerous during melting snow or long rainy days. As a result, the cave is also closed and access is only for organized cave exploration accessible.
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Great experience! Flashlight indispensable.
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With a length of almost 16 km, this active water cave is the largest in the whole of the Jura department. The cave is locked and only accessible to organized speleologists. After long rainfalls or snowmelt, the cave in the entrance area is often overcrowded so that if the weather conditions are disregarded, you can be locked in this grotto.
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A small cave where a lot of prehistoric has been excavated and that very late.
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While Fay-En-Montagne itself is known for its rural charm, the broader Jura Mountains region offers several impressive natural caves. These include the historical Osselle Cave, the spectacular Baume-les-Messieurs Cave with its underground river, and the eco-friendly Moidons Cave. Additionally, the Poudrey Chasm provides a unique underground experience with a light show. For local exploration, consider The Lodge at Maillet, a historical site believed to have sheltered a hermit, or View of Poligny from Trou de la Lune, which offers views over Poligny from a cave.
Yes, the Moidons Cave is particularly family-friendly. It features a 'bat corner,' a maze, a nature discovery audio trail, and a picnic area with play features. Its eco-friendly approach, including solar lighting and electric bike tours, also adds to its appeal for families.
The Osselle Cave stands out as one of the oldest caves in the world open to tourists, with visits dating back to the 16th century. It even has stories of tunnels being widened for dances. Locally, The Lodge at Maillet is a historical site believed to have once sheltered a hermit, and View of Poligny from Trou de la Lune has seen significant prehistoric excavations.
Cave temperatures remain cool year-round, typically around 10-12°C (50-54°F). It is advisable to bring warm clothing, even during summer, to ensure a comfortable visit.
Yes, for those seeking a more challenging experience, Grotte de Saint-Bilbalbo is noted as a challenging cave where a flashlight is highly recommended for exploration. Additionally, the Entrance to Grotte de la Borne aux Cassots is a significant active water cave with almost 16 km of passages, but access is restricted to organized speleologists due to its challenging nature and potential dangers during high water levels.
The caves in the Jura Mountains showcase diverse geological formations. You can expect to see impressive stalactites and stalagmites, underground rivers and lakes, and unique rock formations. For example, the Grottes de Baumes — Waterfall and Cave features beautiful stalactite jewelry and washed-out passages, alongside a stunning waterfall outside.
The region around Fay-En-Montagne offers various outdoor activities. You can find numerous hiking trails, such as those detailed in the Hiking around Fay-En-Montagne guide, including easy loops around Château-Chalon. For cyclists, there are routes like the Ladoye Viewpoint – Baume-les-Messieurs Abbey loop, found in the Cycling around Fay-En-Montagne guide. Gravel biking options are also available, with routes like the Révigny Metal Viaduct loop in the Gravel biking around Fay-En-Montagne guide.
Yes, the Poudrey Chasm offers a unique underground experience with a 'Music & Light' show. This show vividly recounts the Earth's history from the Big Bang to the present day, providing an extraordinary journey into the earth.
Caves generally maintain a consistent cool temperature year-round, making them a good option for visiting in any season. They can be particularly appealing in summer as a way to cool off. However, some caves, like Baume-les-Messieurs, close during winter to serve as a sanctuary for bats, so it's always best to check specific opening hours before planning your visit.
Visitors appreciate the diverse experiences offered, from exploring historical sites like The Lodge at Maillet to challenging speleological sites. The unique geological formations, such as those in Grottes de Baumes, and the opportunity to cool off in the natural environment are also highly valued. The komoot community has shared over 50 photos and given more than 170 upvotes to these cave highlights.
Yes, View of Poligny from Trou de la Lune is a cave that doubles as a viewpoint. It offers a beautiful perspective over Poligny and its vineyards from a cave dug into the limestone cliffs.


Extend your search for the best caves by checking out these guides of the top ones around Fay-En-Montagne: